1/*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#include "abilitychildprocessinfo_fuzzer.h"
17
18#include <cstddef>
19#include <cstdint>
20
21#define private public
22#define protected public
23#include "child_process_info.h"
24#undef protected
25#undef private
26#include "parcel.h"
27#include <iostream>
28#include "securec.h"
29#include "configuration.h"
30using namespace OHOS::AppExecFwk;
31namespace OHOS {
32namespace {
33constexpr int INPUT_ZERO = 0;
34constexpr int INPUT_ONE = 1;
35constexpr int INPUT_TWO = 2;
36constexpr int INPUT_THREE = 3;
37constexpr size_t FOO_MAX_LEN = 1024;
38constexpr size_t U32_AT_SIZE = 4;
39constexpr size_t OFFSET_ZERO = 24;
40constexpr size_t OFFSET_ONE = 16;
41constexpr size_t OFFSET_TWO = 8;
42}
43
44uint32_t GetU32Data(const char* ptr)
45{
46    // convert fuzz input data to an integer
47    return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[INPUT_TWO] << OFFSET_TWO) |
48        ptr[INPUT_THREE];
49}
50
51bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
52{
53    std::shared_ptr<ChildProcessInfo>childProcessInfo = std::make_shared<ChildProcessInfo>();
54    if (childProcessInfo == nullptr) {
55        return false;
56    }
57    Parcel parcel;
58    childProcessInfo->ReadFromParcel(parcel);
59    childProcessInfo->Marshalling(parcel);
60    ChildProcessInfo::Unmarshalling(parcel);
61    return true;
62}
63}
64
65/* Fuzzer entry point */
66extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
67{
68    /* Run your code on data */
69    if (data == nullptr) {
70        return 0;
71    }
72
73    /* Validate the length of size */
74    if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
75        return 0;
76    }
77
78    char* ch = (char*)malloc(size + 1);
79    if (ch == nullptr) {
80        std::cout << "malloc failed." << std::endl;
81        return 0;
82    }
83
84    (void)memset_s(ch, size + 1, 0x00, size + 1);
85    if (memcpy_s(ch, size, data, size) != EOK) {
86        std::cout << "copy failed." << std::endl;
87        free(ch);
88        ch = nullptr;
89        return 0;
90    }
91
92    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
93    free(ch);
94    ch = nullptr;
95    return 0;
96}
97
98